Answer these questions referring to the image below Humans have been selecting maize for desirable characteristics ever since domestication of the crop Figure 1 (below) describes the traits of maize cobs found in four archaeological deposits from the Tehuacn cave in Puebla, Mexico, Rachis diameter refers to the diameter of the cob at its base. Average number of rows refers to the number of rows of kernels per cob. A. Which archaeological layer contains the oldest maize remains? The youngest? B. Compare and contrast the oldest and youngest maize cobs in the archaeological C. Based on these data, what can you say about the kinds of traits that farmers have been selecting for in maize over the past 5,000 years? Figure 1. Corn cob fossils discovered in different layers of the Tehuacn cave in Mexico. The age of each layer is indicated. Present-day com consists of two differentvarieties. For each corn sample, theaverage rachis diameter and row number are noted. Modem Tattoo Machiedam Age number of Modern A 1.00 Ace 1 Tatoto 12 Tattoo 09 Present 800 Layer D - 150 old 0.4 . Layer 4732 years 00 Modern Tabloncillo Rachidiareer om Average number of rows Modern Artochte Arrecillo 1.09 &1 Tabloncillo 0.0 Tabloncillo 17 Present Layer D -1850 years old 0.4 97 Layer T2 years old 0.36 89 Layer B --5370 years old 0,32 86 AN NIS Layer A -50ye old 0.26 7.3